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DefenderPad Laptop Radiation and Heat Shield Review

Wesstron    -   August 13, 2013
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DefenderPad Laptop Radiation and Heat Shield Testing & Results:

As stated before, we do not have access to the highly specialized type of facility or hardware needed to test the efficiency of the DefenderPad Laptop Radiation and Heat Shield. For the purpose of this review, I will be reporting the results of the independent testing that was performed by US Tech between September 1 and October 2, 2012. The report was issued on the date of October 3, 2012 under project number 12-0384.

The objective of this independent testing was to measure the effectiveness of the DefenderPad Laptop Radiation and Heat Shield at different frequencies. The long list of test instruments and accessories used include some specialized devices: audio signal generators, spectrum analyser, ELF field monitor, etc…

I will not go through the testing procedure in detail, since the full report can be found here as a PDF file. Basically the testing consists of measuring the level of radiation passing from a transmitter to a receiver, with and without the DefenderPad in between. The results are listed in the two tables below, and are rather impressive!

Extremely Low Frequency (ELF) Electromagnetic Radiation (EMR) (Magnetic Component) Test Results:

Frequency (Hz)
Shielding Effectiveness (%)
300
98.25
60
95.16

Radio Frequency (RF) Electromagnetic Radiation (EMR) Test Results:

Frequency (MHz)
Shielding Effectiveness (dB)
Shielding Effectiveness (%)
Horizontal
Vertical
800
-36.1
-30.9
99.97545
99.91872
1700
-34.9
-26.1
99.96764
99.75453
1900
-34.2
-25.8
99.96198
99.73697
2100
-33
-24.5
99.94988
99.64519
5000
-28.9
-21.1
99.87118
99.22375

The measurement uncertainty (with a 95% confidence level) for this test is ± 1 dB.

The results show that the DefenderPad Laptop Radiation and Heat Shield is capable of delivering the protection levels that it claims. Now keep in mind that any portable device we use emits radiations in all directions. The area affected by these fields is relative to (just to name a few variables) the type of the device, transmission power, and materials used for interior shielding. When a laptop is used on a desk, the body of the user is at least a foot away from the device; at such distance, the harmful effects of the radiations are minimized and considered acceptable by modern science standards. When a laptop is set on your lap, the ELF and RF radiation fields will be dangerously close to the body, thus most certainly to have a harmful effect. This is where the DefenderPad Laptop Radiation and Heat Shield comes into play and provides an efficient protection by blocking the radiation at almost 100%. 




  1. DefenderPad Laptop Radiation and Heat Shield: Introduction & Closer Look
  2. DefenderPad Laptop Radiation and Heat Shield: Specifications & Features
  3. DefenderPad Laptop Radiation and Heat Shield: Testing & Results
  4. DefenderPad Laptop Radiation and Heat Shield: Conclusion
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